Crushing-machine.



E. B. SYMONS.

ORUSHING MACHINE.

APPLICATION FILED APR. 1, 1912.

1,069,496. Patented Aug. 5, 1913.

- out of mv co-pending application No.

EDGAR B. SYMONS, OF MILWAUKEE, WISCONSIN.

CBUSHING-MACHINE.

Specification of Letters Patent.

Patented Aug. 5,1913.

Original application filed January 26, 1910, Serial No. 540,119. Dividedand this application filed April 1,

- 1912. Serial N 0. 687,661.

To all whom it ma concern:

. Be it known t at I, EDGAR B. SYMONS, a citizen of the United States,residing at Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented a certain new and useful'lmprovement inCrushing- Machines, of which the following is a specification. Myinvention, which is a divisional application based on the subject matterdivided 540,119 filed January 26, 1910, has for one 1 object to providenew and improved means for fastening a crushing disk to a disk crusheras illustrated diagrammatically in one form in the accompanying drawmg,

- "Lilfifiarts are. indicated by like letters -.throughout the severalfigures. 25 v The spherical crusher head A, which is mounted on theshaft A carries the dish shaped crushing member A which is held againstthe backing A by the holding screw A which screw is provided with theconical head A in engagement with the conically apertured collar Arigidly held in central position in the disk A The collar A is providedabout its periph- 'ery adjacent its upper side with'the flange A; Thisflange overlies a flange A, which projects inwardly from the crushingdisk A on its inner side thus' forming a halved joint between the diskand the collar. The pressure may thus be exerted upon the collar to drawthe disk against this seat without exerting any separating force uponthe disk and any flowing of the metal of the disk which would'tend toconstrict t-he'size of the aperture in which the collar is located willmerely exert a pressure force upon the collar and exert no tendencytoward throwing it out as would he the case if the engaging surfaceswere inclined. Moreover the fact that the plane between "th llar A andplate A is normal to the 'lini of pressure between them prevents thepossibility of any wedging action which would tend to distort the planeor collar by forcing one into the other. The screw A is in engagementwith the screw thread A on the inside of the pocket A in the crusherhead. The

pocket A is provided with the lugs B which project into the holes B inthe base of the pocket A and compress the spiral springs B to force theplate outwardly. The plate B is provided with the teeth 13* inopposition to the teeth 13 on the end of the screw A and has the lug Bprojecting upwardly beyond said teeth. The screw A is provided with thecentrally disposed polygonal pocket C in which is located the squaredend C of the screw C which is screw-threaded in the center of the screwA and is in opposition at its lower end to the lug B.

It will be evident that, while I have shown in my drawing an operativedevice, still many changes might be made both in size, shape andarrangement of parts without departing materially from the spirit of myinvention. I have illustrated my whole means as applied to a diskcrusher having a disk shaped crushing disk and it will at once beevident that, while this device is primarily intended for use in suchconnection where the ordinary lock, nuts, bolts,

be used for a large number of situations and I wish therefore mydrawings to be regarded in a sense diagrammatic.

The use andoperation of my invention are as follows: It will beunderstood that the crushing disk will preferably be made of some toughor ductile material such as manganese steel which flows readily whengreat pressures are brought to bear upon it and this fiowage will underordinary circumstances have a tendency to constrict the material aboutany centrally disposed holding means and lock it imposition and Iprovide, therefore, a centrally disposed washer of some other materialwhich is designed to take up and resist such flowing and lockingtendency. Any such material as is suited for a crushing disk will, it isat once evident,' be unsuited for machining. It is thereforenecessary toprovide a soft metal backing which may be poured between the disk andthe head to form a foundation for the crushing disk at all points. In[assembling my device the inner screw located within the main holdingscrew is first screwed in. The locked diskis placed in the pocket insuch manner that the lugs thereon extend into the holes projectingtherefrom and rest against the spiral spr1ngs. The d1sk 1s then put inplace and the holding screw mserted through it and screwed into thepocket n 5 the crushing head. The inner screw Wlll rest against the lugproject-mg upwardly from the locking plate and hold 1t. away from theend of the screw so as to keep the teeth out of register one with theother. When the holding screw has been tightened down into position insuch manner that the conical head is pressed tightly agalnst the conicalsurface in the washer the central screw is then screwed out sutiicientlyto enable the teeth on the locking disk to engage the teeth on the endof the screw thus holding the screw firmly in posltlon and preventingits working out and releasing the disk.

I have stated that the flow of the metal in the crushing disk will havea tendency to constrict the central hole and this is likely to occurwhen the crushing forces are distributed pretty well over the surface ofthe disk, but if it happens that the crushing is localized about theperiphery of the disk, there is a possibility that the extension whichthere takes place will be taken up by the metal and notpermitted toreach the central hole, but if this occurs, there will be a tendency forthe disk to flatten out and great pressure will then be exerted, tendingto raise the center of the disk, and this pressure will under somecircumstances be so great as in itself to cause a washer cent-rallydisposed on the disk to grip the holding bolt. In view of the fact thatthis collar may be machined and made smooth and even, this tendencytoward gripping ofthe holding bolt is of course materially minimized.

I claim:

1. In a crushing machine a crushing head and a disk, centrally disposedmeans for holding said disk in position thereon, said means comprising acentrally disposed single screw and means for preventing thedisengagement of said screw.

2. In a crushing machine a crushing head and a disk and centrallydisposed means for holding said disk in position thereon and means forprotecting said holding device from the constrictive action of the disk.

3. In a crushing machine a crushing head and a disk, centrally disposedmeans for holding said disk in position thereon, said means comprising ascrew and means for preventing the disengagement of said screw, andmeans for protecting said screw from the constrictive action of thedisk.

4. Ir a crushing machine a crushing head and a disk and centrallydisposed means for holding said disk in position thereon and means forprotecting said holding device 5 from the constrictive action of thedisk, said protecting means comprising a collar carried in the disk.

5. In a crushing machine a crushing head and a disk, centrally disposedmeans for holding said disk in position thereon, said means comprisinga. centrally disposed single screw and means for preventing thedisengagement of said screw, and means for protecting said screw fromthe constrictive action of the disk, said protecting means comprising acollar carried in the disk.

6. In a crushing machine a crushing disk, a collar centrally disposedtherein and a halved joint between said collar and said disk. I

7. In a crushing machine a crushing disk, a collar centrally disposedtherein having a conical bearing surface and a halved joint between saidcollar and said disk.

' 8. In a crushing machine a crushing disk of ductile flowing materialand a centrally disposed annular compression member of resistantmaterial.

9. In a crushing machine a crushing disk of ductile material, acentrally disposed collar therein of resisting material and a halvedjoint between said collar and said disk.

10. In a crushing machine a crushing head and a disk of ductilematerial,means for holding said disk in position thereon and means for protectingsaid holding means from any locking action caused by the flow of theductile material of the disk.

11. In a crushing 'machine a crushing head and a disk of ductilematerial, means for holding said disk in position thereon and means forprotecting said holding means from any locking action caused by the flowof the ductile material of the disk, said holding means comprising ascrew.

12. In a crushing machine a crushing head and a disk of ductilematerial, means for holding said disk in position thereon and means forprotecting said holding means from any locking action caused by the flowof theductile material of the disk, said holding means comprising ascrew, said protecting means comprising a collar surrounding the screw.

13. In a crushing machine acrushing disk, centrally disposed holding,means therefor, a protecting collar interposed, between said holdingmeans and said disk and a conical contact between said collar and saidholding means.

14. In a crushing machine a crushing, disk, centrally disposed holdingmeans therefor, a protecting collar interposed between said holdingmeans and said disk and 5:1 hliilved joint between said collar and said15. In a crushing machine a crushing disk, centrally disposed holdingmeans therefor, a protecting collar interposed between said holdingmeans and said disk, a halved joint between said collar and said disk,and a conical contact between said disk and said holding means.

16. In a crushing machine a crushing disk of ductile material, acentrally disposed collar therein, means for holding said collar inposition so that the constrictive action of the disk will not force itout of position.

17. In a crushing machine a crushing disk of ductile material, acentrally disposed collar therein, means for holding said washer inposition so that the constrictive action of the disk will notforce itout of position, said means comprising a flange on the collar overlyinga flange on the disk.

18. In a crushing machine a crushing head and a crushing disk, meanscomprising a screw for holding said disk thereon and means comprising aconical head upon said screw in opposition to a conical bearing surfaceon the disk for centering the disk with respect to the head.

19. In a crushing machine a crushing disk and a centrally disposed.holding screw Copies of this patent may be obtained for five centseach, by addressing the therein, means for holding said screw againstrotation.

20. In a crushing machine a crushing disk and a centrally disposedholding screw therein, means for holding said screw against rotation,and a device for disengaging said holding means.

21. In a crushing machine a crushing head and a crushing disk thereon, acollar located within said crushing disk and holding means in oppositionto and protected by said collar, the engaging surfaces of said diskandcollar being partially abutting and partially overlying.

22. In a crushing machine a crushing head, a crushing disk thereon, acollar cen- Washington, D. C.

Commissioner of Patents,

